// Copyright 2024 The langsvr Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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#include "langsvr/buffer_writer.h"

namespace langsvr {

BufferWriter::BufferWriter() = default;

Result<SuccessType> BufferWriter::Write(const std::byte* in, size_t count) {
    size_t at = buffer.size();
    buffer.resize(at + count);
    memcpy(&buffer[at], in, count);
    return Success;
}

std::string_view BufferWriter::BufferString() const {
    if (buffer.empty()) {
        return "";
    }
    auto* data = reinterpret_cast<const char*>(&buffer[0]);
    static_assert(sizeof(std::byte) == sizeof(char), "length needs calculation");
    return std::string_view(data, buffer.size());
}

}  // namespace langsvr
